Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem ganhou o Campeonato da ABA em 1971?
 ###Tabelas: CREATE TABLE results_by_teams (results_by_teams_id AUTO_INCREMENT PRIMARY KEY, Teams VARCHAR, Finals appearances INT, Championships INT, Runners-up INT, Years won VARCHAR, Years runners-up VARCHAR) CREATE TABLE grand_slam_singles_performance_timeline (grand_slam_singles_performance_timeline_id AUTO_INCREMENT PRIMARY KEY, Tournament VARCHAR, 1988 VARCHAR, 1990 VARCHAR, 1991 VARCHAR, 1992 VARCHAR, 1993 VARCHAR, 1995 VARCHAR, 1996 VARCHAR, 1997 VARCHAR, 1998 VARCHAR, 1999 VARCHAR, 2000 VARCHAR, 2001 VARCHAR, Career SR VARCHAR, Career Win-Loss VARCHAR) CREATE TABLE gt300 (gt300_id AUTO_INCREMENT PRIMARY KEY, Team VARCHAR, Make VARCHAR, Drivers VARCHAR, Tyre VARCHAR, Rounds VARCHAR) CREATE TABLE previous_clubs (previous_clubs_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Nickname VARCHAR, Years in Competition VARCHAR, No. of Premierships INT, Premiership Years VARCHAR) CREATE TABLE nonstructural_viral_proteins (nonstructural_viral_proteins_id AUTO_INCREMENT PRIMARY KEY, RNA Segment (Gene) INT, Size ( s base pair ) INT, Protein VARCHAR, Molecular weight kDa VARCHAR, Location VARCHAR, Copies per particle VARCHAR)  
SELECT MIN Championships FROM results_by_teams WHERE Years won = 1971